<div class="row clearfix">
    <div class="col-md-12 column">
        <nav class="navbar navbar-default navbar-inverse navbar-static-top" role="navigation">
            <div class="navbar-header">
                <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1"> <span class="sr-only">Toggle navigation</span><span class="icon-bar"></span><span class="icon-bar"></span><span class="icon-bar"></span></button> <a class="navbar-brand" href="#">Brand</a>
            </div>

            <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
                <form class="navbar-form navbar-left" role="search">
                    <div class="form-group">
                        <input type="text" class="form-control" />
                    </div> <button type="submit" class="btn btn-default">搜索</button>
                </form>
            </div>
        </nav>
    </div>
</div>
    <div>
        <br>
        <br>
    </div>
</div>